Split up ios/web:test_support.

ios/web/public/test/http_server/error_page_response_provider.h

Index: ios/web/public/test/http_server/error_page_response_provider.h
diff --git a/ios/web/public/test/response_providers/error_page_response_provider.h b/ios/web/public/test/http_server/error_page_response_provider.h
similarity index 78%
rename from ios/web/public/test/response_providers/error_page_response_provider.h
rename to ios/web/public/test/http_server/error_page_response_provider.h
index 79f4730bd2dbcf35fd4cdfeaac08bd5903ea0c94..39d214d3dcaa6742f904df180a45adecf04c9066 100644
--- a/ios/web/public/test/response_providers/error_page_response_provider.h
+++ b/ios/web/public/test/http_server/error_page_response_provider.h
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_ERROR_PAGE_RESPONSE_PROVIDER_H_
-#define IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_ERROR_PAGE_RESPONSE_PROVIDER_H_
+#ifndef IOS_WEB_PUBLIC_TEST_HTTP_SERVER_ERROR_PAGE_RESPONSE_PROVIDER_H_
+#define IOS_WEB_PUBLIC_TEST_HTTP_SERVER_ERROR_PAGE_RESPONSE_PROVIDER_H_
 
 #include <map>
 #include <string>
 
-#import "ios/web/public/test/response_providers/html_response_provider.h"
+#import "ios/web/public/test/http_server/html_response_provider.h"
 #include "url/gurl.h"
 
 // A HtmlResponseProvider that supports the following additional URLs:
@@ -34,4 +34,4 @@ class ErrorPageResponseProvider : public HtmlResponseProvider {
       std::string* response_body) override;
 };
 
-#endif  // IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_ERROR_PAGE_RESPONSE_PROVIDER_H_
+#endif  // IOS_WEB_PUBLIC_TEST_HTTP_SERVER_ERROR_PAGE_RESPONSE_PROVIDER_H_